CN105738682A - Electric checking type approach electric alarm - Google Patents
Electric checking type approach electric alarm Download PDFInfo
- Publication number
- CN105738682A CN105738682A CN201610270068.0A CN201610270068A CN105738682A CN 105738682 A CN105738682 A CN 105738682A CN 201610270068 A CN201610270068 A CN 201610270068A CN 105738682 A CN105738682 A CN 105738682A
- Authority
- CN
- China
- Prior art keywords
- circuit
- self
- checking
- switch
- electric
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/145—Indicating the presence of current or voltage
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Emergency Alarm Devices (AREA)
- Alarm Systems (AREA)
Abstract
The invention relates to an electric checking device, and particularly to an electric checking type approach electric alarm. The alarm comprises a signal collector. The electric checking type approach electric alarm is characterized in that the electric checking type approach electric alarm further comprises a returning circuit, a threshold circuit, a gate circuit shaping circuit, an oscillating circuit, an alarm circuit, a switch self-checking circuit, an electric checking switch and a DC power supply; the signal collector is connected with the returning circuit; the returning circuit, the threshold circuit, the gate circuit shaping circuit, the oscillating circuit, the alarm circuit and the switch self-checking circuit are successively connected; and the switch self-checking circuit is connected with the DC power supply through the electric checking switch, thereby forming an electric checking loop. The electric checking type approach electric alarm has a self checking function and settles a problem of relatively low reliability of an electroscope.
Description
Technical field
The present invention relates to a kind of electroscopic device, be specifically related to a kind of electrical verification type alarming in short range of electric power device.
Background technology
Regulation in the technical measures chapters and sections of State Grid Corporation of China's version " electric power safety working regulation " guarantee safety in 2013: power failure, electrical verification, ground connection；Above-mentioned measure is by operations staff or has the right to perform personnel's execution of operation.Maintainer's not electrical verification before maintenance, that in real work, electric shock is hurt is maintainer.Safety is the most important thing in production process, and dangerous operation is even more important, and must comply with power failure, electrical verification, ground connection when high-tension line interruption maintenance and starts the regulation of operation again, and electrical verification operation must flow through electroscope and completes.Electroscope is used to detect one of conventional electric power safety instrument that whether there is voltage on power equipment, power failure equipments whether really no-voltage is clearly verified by electroscope, carry out other operations again, to prevent charged installation earth lead, to touch the generation of the serious accidents such as electricity equipment by mistake, therefore, in power industry, galvanoscopic effect is very important.Owing to there being electric field to exist around charging equipment, non-contact type electricity checking device directly need not contact with high-voltage line when carrying out electrical verification work, uses conveniently, safely.Electroscope on domestic market is of a great variety, and spread in performance is uneven, or owing to a variety of causes causes electroscope malfunctioning, impact is normal to be used.There is following potential safety hazard in existing non-contact type electricity checking device: if 1 dead battery, electroscope being caused to judge by accident, there is certain potential safety hazard, reliability is low；If 2 electroscopies itself break down, user of service cannot make correct judgement, and reliability is relatively low；3, temperature influence, can there is the phenomenon of null offset in alarm, cause erroneous judgement, and reliability is low.
Summary of the invention
The invention provides a kind of electrical verification type alarming in short range of electric power device, add self-checking function, solve the problem that electroscope reliability is low.
In sum, in order to achieve the above object, the technical solution used in the present invention is as follows, a kind of electrical verification type alarming in short range of electric power device, this alarm includes signal picker, it is characterized in that, also include return circuit, door circuit, gate circuit shaping circuit, oscillating circuit, warning circuit, switch self-checking circuit, electrical verification switch and DC source, signal picker connects return circuit, return circuit, door circuit, gate circuit shaping circuit, oscillating circuit, warning circuit, switch self-checking circuit is sequentially connected with, switch self-checking circuit is connected by electrical verification switch and DC source, composition electrical verification loop.
Further, this alarm also includes main circuit self-checking circuit, voltage self-checking circuit and self-test switch, signal picker, return circuit, door circuit, gate circuit shaping circuit, oscillating circuit are connected with main circuit self-checking circuit respectively with warning circuit, main circuit self-checking circuit connects voltage self-checking circuit, voltage self-checking circuit connects DC source by self-test switch, forms main circuit self-inspection loop.
Further, described return circuit is made up of PNP type triode and two resistance, and the base stage of PNP type triode and colelctor electrode connect a resistance respectively, and emitter stage connects electrical verification switch by diode.
Further, described door circuit is made up of a resistance and an electric capacity, and resistance and electric capacity connect the input of next stage circuit, and the negative pole of electric capacity connects the negative pole of power supply.
Further, described gate circuit shaping circuit is to be in series by two not gates.
Further, described oscillating circuit is made up of NAND gate one not gate of series connection, and outfan one resistance of series connection of NAND gate connects its not gate input, and outfan one electric capacity of series connection of not gate connects the input of NAND gate and the input of warning circuit simultaneously.
Further, described warning circuit is made up of a NPN type triode, a red light emitting diodes, an alarm and two resistance, NPN type triode base stage and emitter stage are connected a resistance respectively, emitter stage connects red light emitting diodes by resistance and connects power cathode simultaneously, connects an alarm between emitter stage and power cathode.
Further, described switch self-checking circuit is made up of two NPN type triode, three resistance and a green LED, electrical verification switch is connected after colelctor electrode one resistance of series connection of previous stage audion, the emitter stage of previous stage audion connects power cathode, the colelctor electrode of previous stage audion is simultaneously connected with the base stage of rear stage audion, the emitter stage of rear stage audion is connected with green LED by a resistance of connecting, the negative pole of green LED connects power cathode, and the colelctor electrode of rear stage audion connects electrical verification switch.
Further, described main circuit self-checking circuit is made up of a normal open switch and a diode, and the positive pole of normal open switch and diode is simultaneously connected with self-test switch, and the other end of normal open switch connects signal picker, and diode cathode connects return circuit.
Have the beneficial effect that produced by the present invention:
The present invention adopts self-test switch, voltage self-checking circuit and main circuit self-checking circuit, first self-inspection is carried out before measuring Devices to test, utilize the result that voltage detector detects, its output is high level or low level is to control the break-make of normal open switch, if high level then controls normal open switch Guan Bi by inductance coil, whether the electricity checking power supply in conjunction with main circuit and switch self-checking circuit is sufficient, also examine whether main circuit exists fault simultaneously, improve the reliability of test, prevent because of electric quantity of power supply deficiency that to be mistaken for Devices to test not charged, there is electric shock accidents.In the present invention, owing to return circuit exists the phenomenon of null offset, the factor affecting null offset is mainly the stability of temperature and supply voltage, in order to suppress null offset, the present invention increases a diode between main circuit self-checking circuit and return circuit, adopts diode compensation mode to stablize quiescent point, it is suppressed that null offset, preventing the erroneous judgement of test result, elimination maintainer contacts feared state of mind during electric equipment.The electrical verification loop of the present invention can verify that whether Devices to test is charged, and can this alarm of self-inspection whether normal operation, present invention also adds self-test switch, voltage self-checking circuit and main circuit self-checking circuit, strengthen self-checking function, solve the problem that electroscope reliability is low.
Accompanying drawing explanation
Fig. 1 is the circuit flow chart of the present invention；
Fig. 2 is the circuit theory diagrams of the present invention；
Fig. 3 is the schematic diagram in kind after the present invention is encapsulated as finished product.
Detailed description of the invention
Below in conjunction with accompanying drawing and specific embodiment, the present invention will be further described in detail, in order to be better understood from the present invention, but protection scope of the present invention is not limited to this.
As shown in Figure 1, a kind of electrical verification type alarming in short range of electric power device, this alarm includes signal picker, it is characterized in that, also include return circuit, door circuit, gate circuit shaping circuit, oscillating circuit, warning circuit, switch self-checking circuit, electrical verification switch and DC source, signal picker connects return circuit, return circuit, door circuit, gate circuit shaping circuit, oscillating circuit, warning circuit, switch self-checking circuit are sequentially connected with, switch self-checking circuit is connected by electrical verification switch and DC source, forms electrical verification loop.This alarm also includes main circuit self-checking circuit, voltage self-checking circuit and self-test switch, signal picker, return circuit, door circuit, gate circuit shaping circuit, oscillating circuit are connected with main circuit self-checking circuit respectively with warning circuit, main circuit self-checking circuit connects voltage self-checking circuit, voltage self-checking circuit connects DC source by self-test switch, forms main circuit self-inspection loop.
Fig. 2 is the circuit diagram of the present invention, a kind of electrical verification type alarming in short range of electric power device, the positive source of this alarm connects the Sb end points of electrical verification switch S2, the Sa end points of electrical verification switch S2 connects the emitter stage of PNP type triode Q2, the base stage of audion Q2 connects one end of resistance R4, colelctor electrode series connection one resistance R6 connect power cathode of audion Q2, forms return circuit 2；The emitter stage of audion Q2 is as one end of the output connection resistance R5 of return circuit 2, the input of the other end AND circuit shaping circuit 4 of resistance R5 connects, it is connected to electric capacity C1, resistance R5 and electric capacity C1 between input and the power cathode of gate circuit shaping circuit 4 and forms door circuit 3；Gate circuit shaping circuit 4 is sequentially connected in series by not gate U1 and not gate U2；The outfan of gate circuit shaping circuit 4 is as the input of the NAND gate U3 of oscillating circuit 5, the input of the outfan series connection not gate U4 of NAND gate U3, resistance R3 is connected between outfan and another input of NAND gate U3 of NAND gate U3, this input of NAND gate U3 also and the electric capacity C2 that connected between the outfan of not gate U4, forms oscillating circuit 5；The outfan of not gate U4, resistance R7, NPN type triode Q3 base stage be sequentially connected in series, the emitter stage of audion Q3, resistance R8, light emitting diode D2 are sequentially connected in series, the negative pole of light emitting diode D2 connects power cathode, audion Q3 emitter stage has been also connected with an alarm Speaker simultaneously and has connect power cathode, forms warning circuit 6；nullThe emitter stage of audion Q3、Resistance R9、The base stage of NPN type triode Q4 is sequentially connected in series，The emitter stage of audion Q4 connects power cathode，The colelctor electrode of audion Q4、The Sa end points of resistance R10 and electrical verification switch S2 is sequentially connected in series，The colelctor electrode of audion Q4 connects the base stage of NPN type triode Q1，The colelctor electrode of audion Q1 connects the Sa end points of electrical verification switch S2，The emitter stage of audion Q1、Resistance R2、Light emitting diode D3 is sequentially connected in series，The negative pole of light emitting diode D3 connects power cathode，Composition switch self-checking circuit 7，Signal picker Sig connects return circuit 2，Return circuit 2、Door circuit 3、Gate circuit shaping circuit 4、Oscillating circuit 5、Warning circuit 6、Switch self-checking circuit 7 is sequentially connected with，Switch self-checking circuit 7 is connected by electrical verification switch S2 and DC source，Composition electrical verification loop.
The present invention is additionally provided with voltage self-checking circuit 8, main circuit self-checking circuit 1 and self-test switch S1, and positive source, self-test switch S1, voltage detector VDET, inductance L1 are sequentially connected in series, and inductance L1 connects power cathode, forms voltage self-checking circuit 8；The Sm end points of self-test switch S1 connects the positive pole of diode D1, the positive pole of diode D1, normal open switch K1, resistance R1 are sequentially connected in series main circuit self-checking circuit 1, the colelctor electrode of negative pole and audion Q2 that the other end of resistance R1 connects signal picker Sig, diode D1 connects.Main circuit self-checking circuit 1, voltage self-checking circuit 8, self-test switch S1, signal picker Sig, return circuit 2, door circuit 3, gate circuit shaping circuit 4, oscillating circuit 5, warning circuit 6 and DC source, form main circuit self-inspection loop.
Above-described light emitting diode D3 is green LED, light emitting diode D2 is red light emitting diodes, and light emitting diode D3 and light emitting diode D2 can also is that and connected, by a red and green color light emitting diode common cathode, the function realizing sending HONGGUANG and green glow.
Being divided into two steps in use: step one, self-inspection, press self-test switch S1 and carry out electricity self-inspection, if electricity is not enough, green indicating lamp is bright, then change power supply, if electricity is sufficient, red led is bright, alarm equipment alarm；Step 2, electrical verification, press electrical verification switch S2, electric field signal around measuring targets is acquired and checks, if there being electric field around object under test, red led is bright, alarm equipment alarm, if without electric field around object under test, green indicating lamp is bright, is described in detail below in conjunction with circuit concrete in Fig. 2.
Step one: self-inspection, first presses self-test switch S1 and carries out electricity self-inspection, and voltage detector VDET starts and whether detect electric quantity of power supply sufficient, is divided into two kinds of situations:
The first situation, electric quantity of power supply is sufficient, and voltage detector VDET detects that power supply has electricity, then carry out main circuit self-inspection, electromagnetic relay L1 starts the contact of also adhesive normal open switch K1, diode D1 conducting simultaneously, signal picker turns on, and namely main circuit self-checking circuit 1 turns on, return circuit 2, door circuit 3, gate circuit shaping circuit 4, oscillating circuit 5, warning circuit 6 are both turned on, namely the conducting of main circuit self-inspection loop, light emitting diode D2 red led is bright, and alarm Speaker reports to the police.
The second situation, electric quantity of power supply is not enough, voltage detector VDET detects that electric quantity of power supply deficiency output voltage is low level, electromagnetic relay cannot be started, normal open switch K1 does not close, diode D1 is not turned on, signal picker is not turned on, namely main circuit self-checking circuit 1 is not turned on, return circuit 2, door circuit 3, gate circuit shaping circuit 4, oscillating circuit 5, warning circuit 6 are all not turned on, namely main circuit self-inspection loop is not turned on, but switch self-checking circuit 7 turns on, and light emitting diode D3 green indicating lamp is bright.
If electric quantity of power supply is not enough, then change power supply, again press self-test switch S1 and carry out electricity self-inspection, until the red led of light emitting diode D2 is bright and alarm Speaker reports to the police；Examining the break-make situation of main circuit in the process of electricity self-inspection, if main circuit fault, then red led does not work and alarm Speaker does not report to the police simultaneously yet.
Step 2: electrical verification, the electric field signal pressed around electrical verification switch S2 measuring targets is acquired and checks, and is divided into two kinds of situations:
The first situation, electric field signal is had around object under test, press electrical verification button S2, this electroscope mobile is near object under test, and in electrical verification loop, signal picker Sig will collect voltage signal, return circuit 2, door circuit 3, gate circuit shaping circuit 4, oscillating circuit 5, warning circuit 6 turn on, light emitting diode D2 red led is bright, and alarm Speaker reports to the police, and switch self-checking circuit is not turned on.
The second situation, without electric field signal around object under test, press electrical verification button S2, this electroscope mobile is near object under test, in electrical verification loop, signal picker Sig will be unable to collect voltage signal, and return circuit 2, door circuit 3, gate circuit shaping circuit 4, oscillating circuit 5, warning circuit 6 are all not turned on, switch self-checking circuit 7 turns on, and light emitting diode D3 green indicating lamp is bright.
As shown in Figure 3, after being encapsulated as finished product, utilize the cooperation of electrical verification button 11 and self-inspection button 12 to carry out electrical verification detection, alarm 10 and display lamp 9 to indicate the state of electrical verification or self-inspection, herein, display lamp 9 be red and green color diode realize send two different colors of light, the present invention is simple to operate, individual light and handy, easy to carry.
To illustrate that, above-described embodiment is illustrative not limiting to technical solution of the present invention, the equivalent replacement of art those of ordinary skill or other amendment made according to prior art, as long as not beyond the thinking of technical solution of the present invention and scope, should be included within interest field of the presently claimed invention.
Claims (2)
1. an electrical verification type alarming in short range of electric power device, this alarm includes signal picker, it is characterized in that: also include return circuit, door circuit, gate circuit shaping circuit, oscillating circuit, warning circuit, switch self-checking circuit, electrical verification switch and DC source, signal picker connects return circuit, return circuit, door circuit, gate circuit shaping circuit, oscillating circuit, warning circuit, switch self-checking circuit are sequentially connected with, switch self-checking circuit is connected by electrical verification switch and DC source, forms electrical verification loop.
2. electrical verification type alarming in short range of electric power device according to claim 1, it is characterized in that, this alarm also includes main circuit self-checking circuit, voltage self-checking circuit and self-test switch, signal picker, return circuit, door circuit, gate circuit shaping circuit, oscillating circuit are connected with main circuit self-checking circuit respectively with warning circuit, main circuit self-checking circuit connects voltage self-checking circuit, voltage self-checking circuit connects DC source by self-test switch, forms main circuit self-inspection loop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610270068.0A CN105738682A (en) | 2016-04-27 | 2016-04-27 | Electric checking type approach electric alarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610270068.0A CN105738682A (en) | 2016-04-27 | 2016-04-27 | Electric checking type approach electric alarm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105738682A true CN105738682A (en) | 2016-07-06 |
Family
ID=56287412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610270068.0A Pending CN105738682A (en) | 2016-04-27 | 2016-04-27 | Electric checking type approach electric alarm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105738682A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108398591A (en) * | 2018-05-14 | 2018-08-14 | 河北亚润电力器具有限公司 | All-loop self-inspection electroscope |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7839133B2 (en) * | 2006-09-13 | 2010-11-23 | Extech Instruments Corporation | Remote continuity and cable identifier and polarity checker system and method |
| CN102520234A (en) * | 2011-12-08 | 2012-06-27 | 翟银华 | External detection type coaxial bipolar high-low voltage alternating current acousto-optic electroscope |
| CN202600032U (en) * | 2012-05-21 | 2012-12-12 | 河北天创电气材料制造有限公司 | All-loop electroscope |
| CN103616554A (en) * | 2013-05-29 | 2014-03-05 | 翟银华 | Full self-check AC high-low voltage acousto-optic electroscope and self-check method thereof |
| CN203838232U (en) * | 2014-05-09 | 2014-09-17 | 国家电网公司 | A high-voltage electroscope circuit with self-test |
| CN204515002U (en) * | 2014-12-31 | 2015-07-29 | 国家电网公司 | Antistatic alarm |
| CN205562663U (en) * | 2016-04-27 | 2016-09-07 | 翟银华 | Test nearly electric alarm of electric type |
-
2016
- 2016-04-27 CN CN201610270068.0A patent/CN105738682A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7839133B2 (en) * | 2006-09-13 | 2010-11-23 | Extech Instruments Corporation | Remote continuity and cable identifier and polarity checker system and method |
| CN102520234A (en) * | 2011-12-08 | 2012-06-27 | 翟银华 | External detection type coaxial bipolar high-low voltage alternating current acousto-optic electroscope |
| CN202600032U (en) * | 2012-05-21 | 2012-12-12 | 河北天创电气材料制造有限公司 | All-loop electroscope |
| CN103616554A (en) * | 2013-05-29 | 2014-03-05 | 翟银华 | Full self-check AC high-low voltage acousto-optic electroscope and self-check method thereof |
| CN203838232U (en) * | 2014-05-09 | 2014-09-17 | 国家电网公司 | A high-voltage electroscope circuit with self-test |
| CN204515002U (en) * | 2014-12-31 | 2015-07-29 | 国家电网公司 | Antistatic alarm |
| CN205562663U (en) * | 2016-04-27 | 2016-09-07 | 翟银华 | Test nearly electric alarm of electric type |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108398591A (en) * | 2018-05-14 | 2018-08-14 | 河北亚润电力器具有限公司 | All-loop self-inspection electroscope |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103208776A (en) | Breaker circuit with fault self-detection function | |
| CN201219092Y (en) | Ground fault interrupter | |
| CN204347118U (en) | Electrification in high voltage numerical monitor and blocking device | |
| CN203054158U (en) | Arc fault detecting device with working state indicating function | |
| CN201697987U (en) | Anti-static wristband self-checking disconnection alarm device | |
| CN104330692A (en) | Polarity testing device of sleeve current transformer of main transformer | |
| CN204144912U (en) | A kind of high voltage generating station electrical verification alarm block sytem | |
| CN205123418U (en) | Intelligent distribution box | |
| CN205562663U (en) | Test nearly electric alarm of electric type | |
| CN105738682A (en) | Electric checking type approach electric alarm | |
| CN203849376U (en) | Breaker anti-tripping loop testing apparatus | |
| CN203444008U (en) | High-voltage charge display locking device | |
| CN205193145U (en) | Novel high -voltage electroscope | |
| CN205263294U (en) | Current transformer fault detection device | |
| CN105259466A (en) | A mutual inductor polarity test acousto-optic alarm instrument | |
| CN104300515A (en) | A substation electrical inspection information identification and intelligent protection device | |
| CN102213738A (en) | Short-circuit test device of electric equipment | |
| CN215870723U (en) | Power-off alarm device of intelligent power consumption protector | |
| CN205484641U (en) | Transmitter insurance trouble display circuit | |
| CN211015788U (en) | Visual single-machine circuit of secondary screen cabinet alarm signal of transformer substation | |
| CN204142887U (en) | Wireless remote control type instrument for testing polarity of current transformer | |
| CN203838235U (en) | High voltage AC electroscope | |
| CN105158548A (en) | Novel high-voltage electroscope | |
| CN208737638U (en) | A kind of electric fire monitoring system | |
| CN203350346U (en) | Potential indicator with temperature measuring function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160706 |
|
| WD01 | Invention patent application deemed withdrawn after publication |